@import 'info';
$bgcolor: #f08080;
$width:200px;
$height:150px;
$str: 'hello.jpg';
$class: '.div';
body{
  .box{
    height:$height;
    width:$width;
    background:$bgcolor;
    // background-image: url('./img/' + $str);
    // background-image: url('./img/#{$str}');
  }
}
#{$class} {
  width:100px;
}
*{
  margin:0;
  padding:0;
}